'''
Problem:
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.
What is the smallest positive number that is evenly divisible(divisible with no remainder) by all of the numbers from 1 to N?
'''
from __future__ import print_function

n = int(input())
i = 0
while 1:
    i += n * (n - 1)
    nfound = 0
    for j in range(2, n):
        if (i % j != 0):
            nfound = 1
            break
    if (nfound == 0):
        if (i == 0):
            i = 1
        print(i)
        break
